Analogue and Discretes

Avago optocoupler has flyback controller to drive IGBTs

Avago Technologies has introduced a gate drive optocoupler device that integrates a flyback controller for DC-DC converters and fail-safe IGBT diagnostics.

The device’s 2.5A rail-to-rail output makes it suitable for driving IGBTs and power MOSFETs in industrial power inverters and motor drives.
“By integrating…

Read More
Read More

Novel audio topology aims to increase efficiency

Have you ever heard of an audio amplifier operating in Class-DG?

Neither had I until I came across an unusual amplifier from Maxim, that slipped below Electronics Weekly’s radar when it first came out.

Class-D audio amplifiers (switching audio amplifiers) have done a lot to increase efficiency…

Read More

Dublin firm's high speed ADC cuts power in 4G LTE design

S3 Group, the Dublin-based mixed-signal silicon IP developer,  has introduced a standalone chip, a high-speed 160MS/s 12bit analogue-to-digital converter (ADC).

The successive approximation register (SAR ) ADC  is aimed at high speed wireless systems LTE and 802.11ac Wi-Fi.

The chip, which is fabbed…

Read More

Micrel has high sensitivity post amplifer for FTTH networks

Micrel has introduced two limiting post amplifiers for fibre-to-the-home (FTTH) in next generation passive optical networks.

The SY88073L amplifiers are designed for XGPON.2 optical network unit/optical network terminal applications. They can also be used in continuous mode fibre optic or copper cable SFP+ transceiver modules…

Read More

Chip makes engine sounds for quiet electric cars

Toshiba has developed an automotive audio amplifier for making quiet electric cars louder.

According to the firm: “In 2011 the European Commission adopted a resolution amendment that manufacturers shall be required to install ‘acoustic vehicle alerting system’ [AVAS] in electric vehicles and hybrid electric vehicles, that the sound should be…

Read More

Analog shrinks 16bit DACs

Analog Devices has announced a 16bit DAC in a 2x2mm package.

“With relative accuracy of +/-2LSB INL, a 2ppm/°C 2.5V reference and a space-saving LFCSP package, this combination allows analogue designers to address applications without having to trade accuracy for footprint,” claimed the firm.

Called AD5683R, total…

Read More

Apex cuts noise in 350V op-amps

Apex has introduced a fourth generation of 350V op-amps, cutting noise by 96% and halving offset voltage compared with its original PA41.

Called the PA44x series, noise is now 12µVRMS at 20kHz, to enhance their performance in piezo positioning applications, said the firm. Offset is 5mV typical at…

Read More